Luisa Capannolo¹, Wen Li¹, Qianli Ma², Xiaochen Shen¹, Harlan E. Spence³, John Glen Sample⁴, Arlo Johnson⁴, Mykhaylo Shumko⁴, David M Klumpar⁴, Robert J Redmon⁵, Juan Rodriguez⁶ and Mark J. Engebretson⁷, (1)Boston University, Boston, MA, United States, (2)UCLA, Los Angeles, United States, (3)University of New Hampshire, Durham, NH, United States, (4)Montana State University, Bozeman, MT, United States, (5)Natl Geophysical Data Ctr, Boulder, CO, United States, (6)University of Colorado, Boulder - CIRES, Boulder, United States, (7)Augsburg University, Physics, Minneapolis, MN, United States